Playing with blocks just got a lot cooler thanks to Sifteo, a new game platform, playable at CES 2011, one that uses a computer and a trio of LCD cubes. How does it work? Sifteo's creators show us how.

Sifteo co-creator Jeevan Kalanithi walks us through the new platform, which went on sale in limited numbers earlier this week as part of a preview program. (Sifteo will launch wider later this year.) The platform works with both PC and Mac platforms and is expected launch with about 12 games, according to Kalanithi.